Out-of-Band Response of Reflector Antennas

Abstract

Abstract-The response of reflector antennas to out-of-band frequencies has been analyzed using physical optics. A simple approximate expression has been obtained for the effective aperture, and this R t expression yields both the receiving pattern and the frequency dependence of the on-axis gain. The theory has been compared with published out-ofband measurements, and the pattern agreement is good, but the measured Index Code-IlOd/e, 16a/e, 113d/e, 114d/e.